1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 272 · 40 questions

The trick (Reverse and subtract): Reverse the number and take the smaller number away from the bigger one. The answer is always one of 198, 297, 396, 495, 594, 693, 792, 891: middle digit 9, first and last digits adding to 9. Reverse that answer and add: you always get 1089.

1. 1.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.396 + 693 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
5. 5.Do the 1089 trick with 924: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.693 + 396 =
8. 8.Do the 1089 trick with 306: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.495 + 594 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
11. 11.792 + 297 =
12. 12.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 992: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
16. 16.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 427: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Take 642. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 937: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 148. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.297 + 792 =
31. 31.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 235. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 972. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 341: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 154: reverse and subtract, then reverse that answer and add. What do you get?

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